San Marina Pools AR720 Manuel D'installation Et D'entretien page 7

Pump care
The filter pump is designed to operate without any specific maintenance. However, if the unit is used in pools which are
extremely dirty, especially with leaves, this may cause the pump shaft to jam. In this case, proceed as follows:
• Disconnect the unit from the power point.
• Place the valve on the closed setting.
• Insert the sealing plug on the skimmer.
• Disconnect the suction hose and discharge hose from the pump.
• Loosen the screws which secure the cover to the pump body.
• Clean the wheel. If you see that it is broken, ask the pool manufacturer for a replacement.
• Reinsert the pump cover. Ensure that the coupling is fully centred and firmly tightened.
• Reassemble the suction hose and the discharge hose on the pump.
• Remove the sealing plug from the skimmer.
Troubleshooting and technical service
This filter and its instructions are designed for domestic use, with no need for professional supervision, except for
exceptional cases. Here we shall describe the problems and causes which may arise after years of service of the filter
that you can repair yourself. If you cannot solve the problem, contact the pool manufacturer at the telephone indicated in
the instructions.
MODELS AR720 AND AR725
PROBLEM
The filter leaks through the hose terminals
After the filter has started up, there is no flow in
the feedback nozzle.
Intermittent operation
The flow rate of the filter is low.
Water leaks through the filter opening.
The filter valve leaks through the drain terminal.
The motor will not start up. There is no noise or
vibration.
The motor does not start up but a buzzing sound
can be heard.
Water leakage.
CAUSE
Incorrect connection between the terminals and
the hoses.
The valve is not at the filtration setting.
The filter is above the level of the unprimed
water.
The pump is jammed and must be dismantled.
The suction cover or the skimmer plug has been
inserted.
Low water level in skimmer
The filter is not primed.
Due to use, the filter is dirty.
The filter is not primed.
The connection between the valve and the filter
is dirty.
The metal band is loose.
Inner coupling damaged due to improper use of
chemical product.
Valve head broken due to improper use.
(over-tightening)
No power in the electric line.
Loose motor terminals.
Drive shaft jams after prolonged inactivity.
Condenser damaged
Motor damaged
Find out where the water is leaking.
7
SOLUTION
In threaded housings, place Teflon and insert the
hose terminals up until the bottom of the housing
and tighten the clamps.
Disconnect the filter and place the valve at the
correct setting.
Place the filter in the correct position and prime
it.
See section 7.1
Remove the suction cover or the skimmer plug.
Fill the pool and prime the filter.
Prime the filter.
Carry out a backwash operation.
Prime the filter.
Clean the sand from the opening. Insert the
coupling on the valve properly and tighten the
metal band firmly.
Change the top valve cover.
Do not put chemical products in the pre-filter
skimmer basket.
Change the valve head. Do not over-tighten.
Check that there is power in the electric line.
Switch on the motor (section 6) and check the
motor terminals.
See section 7
This can be purchased from an electrical supply
store (replacement under product guarantee).
Contact the After-Sales Service of the pool
manufacturer.
Check the hose clamps.
If the leak is between the pump and the motor,
contact the After-Sales Service of the pool
manufacturer.